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golomb.c

golomb.c 9.8 KB
История Исходник

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  1. /*
    2. 

  2.  * exp golomb vlc stuff
    3. 

  3.  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
    4. 

  4.  *
    5. 

  5.  * This file is part of FFmpeg.
    6. 

  6.  *
    7. 

  7.  * FFmpeg is free software; you can redistribute it and/or
    8. 

  8.  * modify it under the terms of the GNU Lesser General Public
    9. 

  9.  * License as published by the Free Software Foundation; either
    10. 

  10.  * version 2.1 of the License, or (at your option) any later version.
    11. 

  11.  *
    12. 

  12.  * FFmpeg is distributed in the hope that it will be useful,
    13. 

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    14. 

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    15. 

  15.  * Lesser General Public License for more details.
    16. 

  16.  *
    17. 

  17.  * You should have received a copy of the GNU Lesser General Public
    18. 

  18.  * License along with FFmpeg; if not, write to the Free Software
    19. 

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    20. 

  20.  */
    21. 

  21. 

  22. /**
    23. 

  23.  * @file libavcodec/golomb.c
    24. 

  24.  * @brief
    25. 

  25.  *     exp golomb vlc stuff
    26. 

  26.  * @author Michael Niedermayer <michaelni@gmx.at>
    27. 

  27.  */
    28. 

  28. 

  29. #include "libavutil/common.h"
    30. 

  30. 

  31. const uint8_t ff_golomb_vlc_len[512]={
    32. 

  32. 14,13,12,12,11,11,11,11,10,10,10,10,10,10,10,10,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
    33. 

  33. 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
    34. 

  34. 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
    35. 

  35. 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
    36. 

  36. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    37. 

  37. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    38. 

  38. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    39. 

  39. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    40. 

  40. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    41. 

  41. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    42. 

  42. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    43. 

  43. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    44. 

  44. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    45. 

  45. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    46. 

  46. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    47. 

  47. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
    48. 

  48. };
    49. 

  49. 

  50. const uint8_t ff_ue_golomb_vlc_code[512]={
    51. 

  51. 31,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
    52. 

  52.  7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9,10,10,10,10,11,11,11,11,12,12,12,12,13,13,13,13,14,14,14,14,
    53. 

  53.  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    54. 

  54.  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
    55. 

  55.  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    56. 

  56.  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    57. 

  57.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    58. 

  58.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    59. 

  59.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    60. 

  60.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    61. 

  61.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    62. 

  62.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    63. 

  63.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    64. 

  64.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    65. 

  65.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    66. 

  66.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
    67. 

  67. };
    68. 

  68. 

  69. const int8_t ff_se_golomb_vlc_code[512]={
    70. 

  70.  16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,  8, -8,  9, -9, 10,-10, 11,-11, 12,-12, 13,-13, 14,-14, 15,-15,
    71. 

  71.   4,  4,  4,  4, -4, -4, -4, -4,  5,  5,  5,  5, -5, -5, -5, -5,  6,  6,  6,  6, -6, -6, -6, -6,  7,  7,  7,  7, -7, -7, -7, -7,
    72. 

  72.   2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
    73. 

  73.   3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
    74. 

  74.   1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    75. 

  75.   1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    76. 

  76.  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    77. 

  77.  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    78. 

  78.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    79. 

  79.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    80. 

  80.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    81. 

  81.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    82. 

  82.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    83. 

  83.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    84. 

  84.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    85. 

  85.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    86. 

  86. };
    87. 

  87. 

  88. 

  89. const uint8_t ff_ue_golomb_len[256]={
    90. 

  90.  1, 3, 3, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,11,
    91. 

  91. 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,13,
    92. 

  92. 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,
    93. 

  93. 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,15,
    94. 

  94. 15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,
    95. 

  95. 15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,
    96. 

  96. 15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,
    97. 

  97. 15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,17,
    98. 

  98. };
    99. 

  99. 

  100. const uint8_t ff_interleaved_golomb_vlc_len[256]={
    101. 

  101. 9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
    102. 

  102. 9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
    103. 

  103. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    104. 

  104. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    105. 

  105. 9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
    106. 

  106. 9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
    107. 

  107. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    108. 

  108. 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
    109. 

  109. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    110. 

  110. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    111. 

  111. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    112. 

  112. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    113. 

  113. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    114. 

  114. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    115. 

  115. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    116. 

  116. 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
    117. 

  117. };
    118. 

  118. 

  119. const uint8_t ff_interleaved_ue_golomb_vlc_code[256]={
    120. 

  120.  15,16,7, 7, 17,18,8, 8, 3, 3, 3, 3, 3, 3, 3, 3,
    121. 

  121.  19,20,9, 9, 21,22,10,10,4, 4, 4, 4, 4, 4, 4, 4,
    122. 

  122.  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    123. 

  123.  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    124. 

  124.  23,24,11,11,25,26,12,12,5, 5, 5, 5, 5, 5, 5, 5,
    125. 

  125.  27,28,13,13,29,30,14,14,6, 6, 6, 6, 6, 6, 6, 6,
    126. 

  126.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    127. 

  127.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    128. 

  128.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    129. 

  129.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    130. 

  130.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    131. 

  131.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    132. 

  132.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    133. 

  133.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    134. 

  134.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    135. 

  135.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    136. 

  136. };
    137. 

  137. 

  138. const int8_t ff_interleaved_se_golomb_vlc_code[256]={
    139. 

  139.   8, -8,  4,  4,  9, -9, -4, -4,  2,  2,  2,  2,  2,  2,  2,  2,
    140. 

  140.  10,-10,  5,  5, 11,-11, -5, -5, -2, -2, -2, -2, -2, -2, -2, -2,
    141. 

  141.   1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    142. 

  142.   1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    143. 

  143.  12,-12,  6,  6, 13,-13, -6, -6,  3,  3,  3,  3,  3,  3,  3,  3,
    144. 

  144.  14,-14,  7,  7, 15,-15, -7, -7, -3, -3, -3, -3, -3, -3, -3, -3,
    145. 

  145.  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    146. 

  146.  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    147. 

  147.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    148. 

  148.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    149. 

  149.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    150. 

  150.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    151. 

  151.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    152. 

  152.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    153. 

  153.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    154. 

  154.   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    155. 

  155. };
    156. 

  156. 

  157. const uint8_t ff_interleaved_dirac_golomb_vlc_code[256]={
    158. 

  158. 0, 1, 0, 0, 2, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
    159. 

  159. 4, 5, 2, 2, 6, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1,
    160. 

  160. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    161. 

  161. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    162. 

  162. 8, 9, 4, 4, 10,11,5, 5, 2, 2, 2, 2, 2, 2, 2, 2,
    163. 

  163. 12,13,6, 6, 14,15,7, 7, 3, 3, 3, 3, 3, 3, 3, 3,
    164. 

  164. 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    165. 

  165. 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    166. 

  166. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    167. 

  167. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    168. 

  168. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    169. 

  169. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    170. 

  170. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    171. 

  171. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    172. 

  172. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    173. 

  173. 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
    174.